Standard:

• AS439

Reaffirmed:

• 1991-05-01

Revised:

• 1967-01-31

Revision:

• Historical. Access the latest revision: AS439A

Issuing:

• A-4 Aircraft Instruments Committee

Scope:

This standard covers stall warning instruments to provide positive warning to the pilot of an impending stall. Stall, as defined for the purpose of this standard, is the minimum steady flight speed at which the airplane is controllable.

History:

Standard	Published	Revision	Status
AS439A	2001-10-01	Latest	Reaffirmed
AS439	1967-01-31	Historical	Reaffirmed

AKA:

• SAE AS 439

Sector:

• Aerospace

Topic:

• Avionics
• Aircraft instruments
• Aircraft displays
• Flight control systems
• Flight management systems
• Displays
• Smoke detection
• Instrument panels
• Parts
• Safety
• Fire detection
• Tests and Testing